US2667504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trialkyl-1-benzoylpropane-1,2,3-tricarboxylates and process of preparing same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-05-24
•
Granted: 1954-01-26
•
Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 Dazzi Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/95
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Independent Claim
19 words
THE METHOD WHICH COMPRISES HEATING AT A TEMPERATURE OF AT LEAST 200* C., A KETO-ACETATE HAVING THE GENERAL FORMULA
Claim 4
Independent Claim
19 words
THE METHOD WHICH COMPRISES HEATING AT A TEMPERATURE OF AT LEAST 200* C., A KETO-ACETATE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US1706639A
Cited
US2075107A
Cited
US2472135A
Cited
US2517351A
Cited
US2456517A
Cited
US2526395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |